MS 270 - Saw STIHL - Free user manual and instructions
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| Product Type | Gasoline Chainsaw |
| Engine Displacement | 46.7 cm³ |
| Power Output | 2.6 kW (3.5 hp) |
| Weight (without bar and chain) | 5.0 kg |
| Recommended Bar Length | 35–40 cm (14–16 in) |
| Chain Pitch | 3/8 in |
| Chain Gauge | 0.050 in (1.3 mm) |
| Fuel Tank Capacity | 0.47 L |
| Chain Oil Tank Capacity | 0.26 L |
| Oilomatic® Chain Lubrication | Automatic, adjustable |
| Stihl Ematic™ System | Yes |
| Anti-Vibration System | Yes |
| Chain Brake | QuickStop Super (inertia activated) |
| Spark Plug | Bosch WSR 6 F or NGK BPMR 7A |
| Air Filtration | Long-life filter with pre-separation |
| Carburetor Type | Zama C1Q with purge bulb |
| Recommended Fuel | Mixing ratio 50:1 (gasoline: 2-cycle oil) |
| Operating Temperature | -10 °C to +40 °C |
| Noise Level (LwA) | 110 dB(A) |
| Vibration Level (front/rear handle) | 4.1 / 5.9 m/s² |
| Intended Use | Felling, limbing, and bucking |
| Safety Features | Chain catcher, throttle lock, front hand guard |
| Maintenance Interval (air filter) | Every 10 hours or daily |
| Spare Parts Availability | Full range via authorized dealers |
Frequently Asked Questions - MS 270 STIHL
What is the correct fuel mix for the STIHL MS 270?
Use a 50:1 ratio (2.6 oz of 2-cycle oil per 1 gallon of gasoline) with STIHL HP Ultra or equivalent high-quality oil.
How do I adjust the chain tension on the MS 270?
Loosen the sprocket cover nuts slightly, turn the tensioning screw clockwise to tighten the chain until it fits snugly against the bar underside, then tighten the nuts. Ensure the chain can still be pulled easily by hand.
What bar length is recommended for the MS 270?
The recommended bar length is 35–40 cm (14–16 in). Longer bars can be used but may reduce cutting efficiency.
How often should I clean or replace the air filter?
Clean the air filter every 10 hours of operation or more frequently in dusty conditions. Replace it if damaged or heavily clogged.
Why does my saw not start? Common troubleshooting?
Check that the ignition switch is on, the fuel tank has fresh mix, the spark plug is clean and gapped, and the chain brake is disengaged. Also prime the carburetor by pressing the purge bulb 5–6 times.
How do I maintain the chain and bar?
Regularly sharpen the chain with a proper file, clean the bar groove and oil holes, and check for wear. Replace the chain if the drive links are worn or cutters are damaged.
What safety gear should I use with the MS 270?
Always wear safety goggles, hearing protection, a hard hat, chainsaw chaps, and non-slip gloves. A face shield and steel-toed boots are also recommended.
Can I use ethanol-blended fuel?
Use fuel with no more than 10% ethanol (E10). Higher ethanol content can damage the engine and fuel system. Store fuel in a ventilated container and use within 30 days.
What is the correct spark plug gap?
The gap should be 0.5 mm (0.020 in). Use a feeler gauge to adjust and replace the plug annually or if fouled.
Where can I find replacement parts for the MS 270?
Genuine STIHL parts are available at authorized dealers or online. Provide your saw's model and serial number. Common parts include chains, bars, sprockets, and filters.
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USER MANUAL MS 270 STIHL
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Product information
Brand : STIHL
Model : MS 270
Category : Saw